An Adaptive Finite Element Model for Simulating Natural Convective Effects of Multiple Obstructions
The investigation of laminar natural convection in vertical channels with multiple obstructions on opposite walls is conducted using an h-adaptive FEM algorithm. The adaptive model uses an L2 norm based a posteriori error estimator with a semi-implicit, time-stepping projection technique. The advection terms are treated using an explicit Adams Bashforth method while the diffusion terms are advanced by an implicit Euler scheme. By using the adaptive algorithm, mesh independent studies can be avoided. Results are obtained for thermal and flow patterns including average Nusselt numbers for different parameters (Rayleigh number, aspect ratio and locations of obstructions).
Finite element method; Finite element model; Heat – Convection; Natural; Laminar flow
Aerodynamics and Fluid Mechanics | Fluid Dynamics | Mechanical Engineering
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Pepper, D. W.
An Adaptive Finite Element Model for Simulating Natural Convective Effects of Multiple Obstructions.
ASME International Mechanical Engineering Congress and Exposition
American Society of Mechanical Engineers.